A part of the review has been auto-translated.
I got this set for 139 USD on week-end deals (page only) sale. I already had these kind of tools bought separately, but I was attracted by the idea of having one single case to carry them all at once. This expectation was only partially met, as the case is designed to fit comfortably only three of the four tools, and it was craked and bent in several places, but not enough to defeat its purpose of carrying the tools. On this note, one can consider the fourth tool was added to the case as a bonus, so it will be carried separately without discomfort. All 4 tools have brushless motors. The speed adjutments work on all 4. They had a small amount of dirt, probably because the case didn't close properly with all 4 tools inside. Battery voltage was around 18.5 so close to 60% as needed. See photos for individual weight of tools and battery+charger
All devices work, batteries last long enough, if there is a problem, I will replace the cells with new ones from a company like Panasonic. The devices are in a suitcase, in which all the devices can be stored. For the impact key, I bought professional impact sockets without any problem. He unscrewed the screws in the car wheel. The impact key also has a Hex input, allowing the screws to be unscrewed. The shipment arrived in a week to Poland, most likely the package was in a warehouse in the Czech Republic. I recommend buying.